1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "wallpaperservice_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "message_parcel.h"
22 #include "wallpaper_service.h"
23
24 using namespace OHOS::WallpaperMgrService;
25
26 namespace OHOS {
27 constexpr size_t THRESHOLD = 4;
28 const std::u16string WALLPAPERSERVICES_INTERFACE_TOKEN = u"ohos.Wallpaper.IWallpaperService";
29
30 using namespace OHOS::Security::AccessToken;
31
ConvertToUint32(const uint8_t * ptr)32 uint32_t ConvertToUint32(const uint8_t *ptr)
33 {
34 if (ptr == nullptr) {
35 return 0;
36 }
37 uint32_t bigVar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
38 return bigVar;
39 }
40
FuzzWallpaperService(const uint8_t * rawData,size_t size)41 bool FuzzWallpaperService(const uint8_t *rawData, size_t size)
42 {
43 uint32_t code =
44 ConvertToUint32(rawData) % (static_cast<uint32_t>(WallpaperServiceIpcInterfaceCode::SEND_EVENT) + 1);
45 MessageParcel data;
46 data.WriteInterfaceToken(WALLPAPERSERVICES_INTERFACE_TOKEN);
47 data.WriteBuffer(rawData, size);
48 data.RewindRead(0);
49 MessageParcel reply;
50 MessageOption option;
51 std::shared_ptr<WallpaperService> wallpaperService = std::make_shared<WallpaperService>();
52 wallpaperService->OnRemoteRequest(code, data, reply, option);
53 return true;
54 }
55 } // namespace OHOS
56
57 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)58 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
59 {
60 if (size < OHOS::THRESHOLD) {
61 return 0;
62 }
63
64 /* Run your code on data */
65 OHOS::FuzzWallpaperService(data, size);
66 return 0;
67 }